Method and apparatus for storage and retrieval with multilayer optical disks
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Mar 10, 1995
filing date -
Mar 10, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multilayer optical disk system, which includes an optical disk unit having a number of connected optical disks. A number of light sources, such as diode lasers, are used to provide a number of light beams of different wavelengths. A wavelength multiplexer combines the light beams into a single beam which is then axially dispersed so that light of different wavelengths are simultaneously focuses onto the different optical disks. A wavelength demultiplexer splits light reflected from the optical disks according to wavelength to produce separate beams which are then separately detected.
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